Yz85 clutch won’t disengage.

ParkerM
Posts
23
Joined
2/26/2019
Location
Ashland, MO US
Edited Date/Time 7/16/2019 6:37pm
I replaced the entire clutch on my dirt bike and o have some problems. When I pull the clutch in and shift to first the bike takes off and when I give it throttle it goes like I don’t have the clutch in. If I rev it really high then the bike stops but once the rpms go back down it starts going again. And then if I’m just riding normally and pull in the clutch nothing happens and it just acts like the clutch isn’t pulled in. Could someone please help because I spent over $300 on all clutch parts and it still doesn’t work!
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Mike554
Posts
4
Joined
7/16/2019
Location
Louisburg, NC US
7/16/2019 12:55pm
Did you replace the hub that the metal plates go on?
ParkerM
Posts
23
Joined
2/26/2019
Location
Ashland, MO US
7/16/2019 2:54pm
@Mike554 yes I replaced everything
mxbrian15
Posts
533
Joined
12/8/2015
Location
Orlando, FL US
7/16/2019 3:05pm
How much play do you have in the cable/lever? Make sure it’s actually moving the pressure plate. Take off the cover and modulate the lever, see if anything moves. That’s all I can think of based off what you’ve described.
lostboy819
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11520
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8/16/2006
Location
Somewhere, CO US
Fantasy
1342nd
7/16/2019 3:26pm
Take it to a shop before you hurt yourself or someone else Cool
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The Shop

MT952
Posts
19
Joined
4/11/2016
Location
Canfield, OH US
7/16/2019 3:28pm
Make sure it’s assembled correctly

Found these from 2012 service manual

Not sure what year u might have

Mike



cwtoyota
Posts
1935
Joined
3/11/2013
Location
Tacoma, WA US
7/16/2019 3:35pm
mxbrian15 wrote:
How much play do you have in the cable/lever? Make sure it’s actually moving the pressure plate. Take off the cover and modulate the lever, see...
How much play do you have in the cable/lever? Make sure it’s actually moving the pressure plate. Take off the cover and modulate the lever, see if anything moves. That’s all I can think of based off what you’ve described.
I agree, adjustment is probably the issue.



Another possibility:
I recently put a Barnett clutch basket in one of my YZ250s. The kick-start gear which was manufactured and pressed into the basket by Barnett was too tall. That caused a hardnened thrust washer to friction-weld to the gear. I'm a machinist, so rather than deal with Barnett I modified their parts to match OEM dimensions and replaced the damaged OEM washers.

You can check for clearance in that bearing fairly easy:
Put the bike in neutral and lay it on it's side so you don't have to drain the oil.
Remove the outer clutch cover.
Remove the pressure plate (bolts and springs) and then remove all the clutch plates.

The inner hub should turn freely without any resistance (independent of the clutch basket)
The basket should rotate too, but you'll be turning the engine, so it will have resistance from compression.
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MotoChris
Posts
427
Joined
12/12/2016
Location
Vilonia, AR US
7/16/2019 6:37pm
Aside from all of the above advice, the metal discs probably have a "sharp" side and they should all be facing the same direction. If you remove the clutch discs and reinstall them, feel each metal plate at the edges to make sure that the sharp sides all face the engine and the smooth/rounded edges are all facing out.
tylermx967
Posts
506
Joined
4/1/2008
Location
Athens, TX US
7/16/2019 7:46pm
WE RUND A OIL MIX THATS HAFF ATF AND HAFF DEISEL FUEL AND DIND EVER HAVE PROBLEMS IN SUSZUKI RM85
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